Definition of: girdler

(gûrd′lər) noun
1. One who makes girdles.
2. One who or that which girdles or encircles.
3. Entomol. Any insect which cuts through the bark of twigs or branches; especially, the American twig girdler (Oncideres cingulata), which severs the twigs of hickory, poplar, and many other trees.